diff --git a/src/Engine/Data/BlinnPhongMaterial.hpp b/src/Engine/Data/BlinnPhongMaterial.hpp
index 805eb266b1b..cd069803770 100644
--- a/src/Engine/Data/BlinnPhongMaterial.hpp
+++ b/src/Engine/Data/BlinnPhongMaterial.hpp
@@ -24,9 +24,7 @@ namespace Data {
 class ShaderProgram;
 
 namespace TextureSemantics {
-namespace BlinnPhongMaterial {
-enum class TextureSemantic { TEX_DIFFUSE, TEX_SPECULAR, TEX_NORMAL, TEX_SHININESS, TEX_ALPHA };
-}
+enum class BlinnPhongMaterial { TEX_DIFFUSE, TEX_SPECULAR, TEX_NORMAL, TEX_SHININESS, TEX_ALPHA };
 } // namespace TextureSemantics
 
 /**
@@ -38,12 +36,12 @@ enum class TextureSemantic { TEX_DIFFUSE, TEX_SPECULAR, TEX_NORMAL, TEX_SHININES
 class RA_ENGINE_API BlinnPhongMaterial final
     : public Material,
       public ParameterSetEditingInterface,
-      public MaterialTextureSet<TextureSemantics::BlinnPhongMaterial::TextureSemantic>
+      public MaterialTextureSet<TextureSemantics::BlinnPhongMaterial>
 {
     friend class BlinnPhongMaterialConverter;
 
   public:
-    using TextureSemantic = TextureSemantics::BlinnPhongMaterial::TextureSemantic;
+    using TextureSemantic = TextureSemantics::BlinnPhongMaterial;
 
   public:
     EIGEN_MAKE_ALIGNED_OPERATOR_NEW
@@ -59,7 +57,7 @@ class RA_ENGINE_API BlinnPhongMaterial final
      * associated textures.
      */
     ~BlinnPhongMaterial() override;
-    using MaterialTextureSet<TextureSemantics::BlinnPhongMaterial::TextureSemantic>::addTexture;
+    using MaterialTextureSet<TextureSemantic>::addTexture;
 
     /// \todo Fix this specialiration. Maybe assume that named texture have to be added to manager
     /// before hand, and that texture on the fly addition is a fix, hence no special care for normal
@@ -69,8 +67,7 @@ class RA_ENGINE_API BlinnPhongMaterial final
         auto texManager = RadiumEngine::getInstance()->getTextureManager();
         auto texHandle  = texManager->getTextureHandle( texture );
         if ( texHandle.isValid() ) {
-            MaterialTextureSet<TextureSemantics::BlinnPhongMaterial::TextureSemantic>::addTexture(
-                semantic, texHandle );
+            MaterialTextureSet<TextureSemantic>::addTexture( semantic, texHandle );
         }
         else {
             TextureParameters data;
@@ -79,8 +76,7 @@ class RA_ENGINE_API BlinnPhongMaterial final
             data.sampler.wrapT = GL_REPEAT;
             if ( semantic != TextureSemantic::TEX_NORMAL )
                 data.sampler.minFilter = GL_LINEAR_MIPMAP_LINEAR;
-            MaterialTextureSet<TextureSemantics::BlinnPhongMaterial::TextureSemantic>::addTexture(
-                semantic, data );
+            MaterialTextureSet<TextureSemantic>::addTexture( semantic, data );
         }
     }
 
diff --git a/src/Engine/Data/SimpleMaterial.hpp b/src/Engine/Data/SimpleMaterial.hpp
index 3e4ad6c1a8f..4d89ce4691e 100644
--- a/src/Engine/Data/SimpleMaterial.hpp
+++ b/src/Engine/Data/SimpleMaterial.hpp
@@ -18,27 +18,23 @@ namespace Data {
 
 /** @brief Namespace to define materials' texture semantics.
  *
- * Convention: add you're material's MyMaterial TextureSemantic Enum inside it's MyMaterial nested
- * namespace.
+ * Convention: add you're material's MyMaterial Enum inside TextureSemantics namespace.
  */
 namespace TextureSemantics {
-namespace SimpleMaterial {
 /// Semantic of the texture : define which BSDF parameter is controled by the texture
-enum class TextureSemantic { TEX_COLOR, TEX_MASK };
-} // namespace SimpleMaterial
+enum class SimpleMaterial { TEX_COLOR, TEX_MASK };
 } // namespace TextureSemantics
 
 /**
  * Base implementation for simple, monocolored, materials.
  * This material could not be used as is. Only derived class could be used by a renderer.
  */
-class RA_ENGINE_API SimpleMaterial
-    : public Material,
-      public ParameterSetEditingInterface,
-      public MaterialTextureSet<TextureSemantics::SimpleMaterial::TextureSemantic>
+class RA_ENGINE_API SimpleMaterial : public Material,
+                                     public ParameterSetEditingInterface,
+                                     public MaterialTextureSet<TextureSemantics::SimpleMaterial>
 {
   public:
-    using TextureSemantic = TextureSemantics::SimpleMaterial::TextureSemantic;
+    using TextureSemantic = TextureSemantics::SimpleMaterial;
     /**
      * Construct a named  materialhmb
      * @param name The name of the material